Effects of copper and zinc on Microcystic aeruginosa growth and microcystins production

IF 1.5 4区环境科学与生态学 Q2 Environmental Science Archives of Environmental Protection Pub Date : 2024-05-08 DOI:10.24425/aep.2024.150555

Benjun Zhou, Weihao Xing

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Abstract

The cyanobacteria bloom is one of typical manifestations of eutrophication, yet the effects of heavy metals entering water on cyanobacteria bloom remain unclear. In the present study, the effects of copper and zinc ions on the growth of Microcystic aeruginosa (M. aeruginosa) and the production of microcystins (MCs) were investigated. The results showed that a Cu2+ concentration of 0.02 mg/L stimulated the growth of M. aeruginosa, while growth inhibition occurred at a Cu2+ concentration of 0.1 mg/L. The maximum value of MC-LR (167.74 μg/L) occurred at a Cu2+ concentration of 0.02 mg/L. In contrast, a Zn2+ concentration of 0.1 mg/L stimulated the growth of M. aeruginosa, whereas growth inhibition was observed at a Zn2+ concentration of 0.5 mg/L. The maximum MC-LR value of 130 μg/L appeared under control conditions. Moreover, the production of MC-LR increased as the growth of M. aeruginosa was inhibited with a Cu2+ concentration of 0.1 mg/L, whereas the production of MC-LR decreased as the growth of M. aeruginosa was stimulated with a Zn2+ concentration of 0.1 mg/L, compared to their respective controls.

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铜和锌对铜绿微囊藻生长和微囊藻毒素产生的影响

蓝藻藻华是水体富营养化的典型表现之一，但重金属入水对蓝藻藻华的影响尚不明确。本研究考察了铜离子和锌离子对铜绿微囊藻（M. aeruginosa）生长和微囊藻毒素（MCs）产生的影响。结果表明，Cu2+浓度为 0.02 mg/L 时，铜绿微囊藻的生长受到刺激，而 Cu2+ 浓度为 0.1 mg/L 时，铜绿微囊藻的生长受到抑制。Cu2+ 浓度为 0.02 mg/L 时，MC-LR 的最大值（167.74 μg/L）出现。相反，0.1 mg/L 浓度的 Zn2+ 会刺激铜绿微囊藻的生长，而 0.5 mg/L 浓度的 Zn2+ 则会抑制铜绿微囊藻的生长。在对照条件下，MC-LR 的最大值为 130 μg/L。此外，与各自的对照组相比，当 Cu2+ 浓度为 0.1 mg/L 时，铜绿微囊藻的生长受到抑制，MC-LR 的产量增加；而当 Zn2+ 浓度为 0.1 mg/L 时，铜绿微囊藻的生长受到刺激，MC-LR 的产量减少。

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来源期刊

Archives of Environmental Protection 环境科学-环境科学

CiteScore

2.90

自引率

26.70%

发文量

审稿时长

9 months

期刊介绍： Archives of Environmental Protection is the oldest Polish scientific journal of international scope that publishes articles on engineering and environmental protection. The quarterly has been published by the Institute of Environmental Engineering, Polish Academy of Sciences since 1975. The journal has served as a forum for the exchange of views and ideas among scientists. It has become part of scientific life in Poland and abroad. The quarterly publishes the results of research and scientific inquiries by best specialists hereby becoming an important pillar of science. The journal facilitates better understanding of environmental risks to humans and ecosystems and it also shows the methods for their analysis as well as trends in the search of effective solutions to minimize these risks.